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%I #5 Oct 23 2023 05:02:53
%S 1,3,14,46,206,694,2610,9420,35038,130784,484136,1827996,6891816,
%T 26121822,99232238,379021972,1450654796,5564804616,21406426134,
%U 82457456808
%N Sum of CarmichaelLambda[n] between successive powers of 2.
%F a(n)=Sum[CarmichaelLambda[i], {i, 2^n, 2^(n + 1) - 1}]
%t a= Table[Sum[CarmichaelLambda[i], {i, 2^n, 2^(n + 1) - 1}], {n, 0, 24}]
%K nonn,less
%O 1,2
%A _Roger L. Bagula_, Mar 12 2005
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